(1) Kareem pumped 28 gallons of water in her pool. This was done over a period of 4 minutes at a constant rate. What was the change in the amount of water in the pool each minute?

Johnny rode his bike to a friends house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was unable to play. what was his displacement for the total bike ride trip? what could you use as a reference point ? show the steps to solve this problem.